Ball-caster.



B. H. ,SLEICHER.

BALL CASTER. APPLICATION FILED JBN. 30. I915.

? Patented Sept. 21, 1915.

Cit

which the followin P3 .citizcn of the ll ited RALPH HEBBEBT SLEICHER, F TROY, NEW YORK, ASSIGNOR T0 THE HOSPITAL APPLIANCE COMPANY, OF TROY, NEW

YORK, A COHEORATION OF NEW YORK.

BALL-CASHIER.

To all-whom. '1' 15 may concern:

Be it known that l, RALPH H. insicnlnn, a States. residing at Troy, in the county of llensselaer and State of New York, have invented certain new and useful l1!!]')l'()\ 3ll111tS in liall Casters, of

is a specificatioxn reference being had therein to the accompanying drawing. v

The present invention. relates to an improved hull caster. one object of the invention being the provision of. a caster constructed for use upon hospital couch or spring frames, barn and garage doors, and upon furniture of all kinds and characters, it being especially adapted for use upon structures where the hall. is guided in a runway, the caster house shank being mounted in a hull hearing so that in case the housing should in'ipinge or contact the side of the runway the shank can rotate upon its axis and thus permit a noiseless and easy running caster. v

A further object of the invention is the provision of a hall'caster, which is provided with o. ball bearing load carrying hall for contact with the supporting surface, the

. shank olithehull carrying member heingsun rounded by a hall hearing which permits the shanl; to rota upon its axis while the hall hearing coiiperatcs with an attaching plate to hold the complete caster in assembled and mounted position. W1 th the above and other objects in View .'and which will reudily agpcar as the description proceeds this invention resides in the details set forth and particularly pointed out in the appended claims.

In the accompanying drawings, Figure 1 is a sectional View. through one. corner of a hospital couch frame showing one use for the present hall caster, which is in assembled position. 2 is a. vertical section through the complete caster. Fig. 3 is a top plai'i. View thereof.

Referring to the drawings, the numeral '1 designates the corner of a couch ironic an 2 the runway for the caster 3.

The corner is provided with an opening or socket l into which the casing 5 of the ball bearing 6 Specification of Letters Patent.

fits. The inner sleeve 7 of the Patented Sent. 21, 1915 so, 1915. Seria'lNo. 5,1ss.

hall bearing is fast about the tubular shank S of the caster, While the housing 9 for the ball 10, is an enlargement of the shank. Fitted within the. upper end of the housing 5) is the cap 11, which provides a casing for the. ball hearing 12, the balls 13 of which antihictionally engage the hall 10 from above and thus permit the ball 10 to rotate freely in ,its housing when in contact with the runway us shown in Fig. 1. 1 i

The casing 5 is of greater diameter thar the housing 9, while the opening 13 of th securing plate- 14; aineter than the housing 7 9 and o lesser di' ameter than the casing I), so that when the platcis in the position as shown in i 1v and attached to the corner 1, the caster is supported. in'placc and held against down- -ward displacement. The casing held in fixed position, so that the when contacting the sides of the runway will rotate freely upon a vertical axis an without any jar upon the couch, this being very essential in a hospital bed.

It will therefore be elident that the hall 10 under most conditions the full load and that the least friction. possible is the result, while the hull hearing 6, whose center is the vertical uXlS of the hull ll) permits the housing; 9 to rot-ate freely when required so to do. It is also evident that the plate 1 L can be easily placed about the housing and beneath the casing 5 to lock the parts assembled.

'lIhis caster though particularly designed for hospital beds, can he used where other casters of a like nature are new employed.

\Vhat is claimed, is:-

1. hall caster, including a. tubular shank having enlarged hall housing, a a mounted in his housing. aosll hearing surrouiniling and carried by the shank and having its outer circumference greater than the circumference of the hall housing, and an apertured attaching plate loosely .upon the housing and cooperating with the hall hearing to hold the caster against longitudinal movement.

2. A hall caster, having an. enlarged hall housing, a ball iounted in the housing, an inner bull race is of slightly reater di Y 5 is also fitting including a tubular shank surrounding and fixed t0 the shank, an outer 1 In testimony whereof I ailix my signature ball race of greater diameter than the eX- in presence of two witnesses. terior of the housing, balls between the RALPH HERBERT SLEICHER. racex, and an apertured attaching plate Witnesses: 5 loosely fitting-about the housing and abut- J. F. WIIELAN,

ting the outer ball race. EI LALIA WEBB. 

